Lol! The "Z" part:

Charlie: Oh look at that.
Blue: El hombre con el sombrero nos envoi (The man with the hat sent us)
Pink: El nos dijo muchas historias asombrosas (He told us some surprising stories)
Blue+Pink: JOJOJOJOJO (HOHOHOHO)
Charlie: What?
Pink: Esta noche nosotros cenamos Tortugas (Tonight we're going to eat turtles)
Blue: Asi que bueno, ellos seran (Ah they'll be delicious)
Charlie: Ah, what did you two do?
Blue+Pink: ZZZZZZZZZZ
Blue: Soy Feliz. (I'm happy)